////////////////////////////////////////////////////////////////////////////
   var storeItem = new Ext.data.JsonStore({
        root: 'articles',
        fields: [
            'id', 'text'
        ],
        // load using script tags for cross domain, if the data in on the same domain as
        // this page, an HttpProxy would be better
        proxy: new Ext.data.HttpProxy({
            url: basePath+'/../catalog',
            doClass:'item',
            itemIds:itemId
        })
    });
    storeItem.setDefaultSort('id', 'desc');

    // create the Grid
    var gridItem = new Ext.grid.GridPanel({
        store: storeItem,
        shadow:true,
        autoScroll: true,
        
        columns: [
            {id:'AA',header: "条号", width: 90, sortable: true, dataIndex: 'id'},
            {header: "内容", width: 600, sortable: true, dataIndex: 'text'}
        ],
         iconCls:'icon-grid',
         bodyStyle:'width:100%;',
		 autoWidth:true,
         height:500,
        title:' '
    });
    gridItem.render('grid_item');
    storeItem.load({params:{doClass:'item',itemIds:itemId}});